55780708911 has 16 divisors (see below), whose sum is σ = 75639289728. Its totient is φ = 36555372000.

The previous prime is 55780708903. The next prime is 55780708913. The reversal of 55780708911 is 11980708755.

It is not a de Polignac number, because 55780708911 - 2³ = 55780708903 is a prime.

It is a super-3 number, since 3×55780708911³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55780708913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213636 + ... + 396486.

It is an arithmetic number, because the mean of its divisors is an integer number (4727455608).

Almost surely, 2^55780708911 is an apocalyptic number.

55780708911 is a deficient number, since it is larger than the sum of its proper divisors (19858580817).

55780708911 is a wasteful number, since it uses less digits than its factorization.

55780708911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184582.

The product of its (nonzero) digits is 705600, while the sum is 51.

The spelling of 55780708911 in words is "fifty-five billion, seven hundred eighty million, seven hundred eight thousand, nine hundred eleven".